Bosch PLENA LBB1938/30 - Low Impedance Loudspeaker Wiring

14 en | External connections PLENA power amplifiers
2018.11 | V1.2 | LBB193x/x0 Installation and operation manual Bosch Security Systems B.V.
6.5 Low impedance loudspeakers
Connect low impedance loudspeakers to the 8Ohm/0 terminals. This output can deliver the
rated output power into an 8Ohm load. Connect multiple loudspeakers in a series/parallel-
arrangement to make the combined impedance 8Ohm or higher. Check the loudspeaker
polarity for in‑phase connection.
1
0
0
V 0
1 0
0
V 0
Pri
or
it
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t
r
ol
l
e
d O
utput
Off On
2
4V DC I
n
Ap
p
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ra
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us deli
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c
o
n
n
ec
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oredfor 2
3
0V~
MainP owe
r
B
atteryIn
put
F
au
lt Rela
y
s
' Outp
ut
NOC
OM NC
Off On
NO
C
O
M
N
C
N
O
CO
M
N
C
In
pu
t
1P
r
iori
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y
Loopthrough1
Input2
P
r
ogram
Lo
o
p
t
hro
u
gh2
Input1P
riority
2...24V-
Inpu
t
1
0V-
I
nput2
Input
2En
a
ble
2.
.24
V
-
En
abl
e
0V-Mute
100
V
0
S
l
aveInp
ut
1
00V
+
+
-
-
1
0
0
V
0
70
V
0
8o
hm
100V/7
0
V
Sel
e
ction
(
1
2
A
)
Pr
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o
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it
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0
0
N
oPr
i
orit
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P
rior
ity
F7
0
1
F7
0
2
B
at
te
ry
P
owe
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Det
ec
tion
Pi
l
ot-to
ne
De
te
c
tor
2
3
0
V~
240
V~
Design& Qualit
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T
he
N
eth
erla
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L
B
B 19
3
8
/
10
NL-4827HG -1
0
Plena4
8
0
WP
ower
Am
pli
er
M
ax.outpu
t
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ower72
0W
Rat
edoutput
p
ower
1
80W
230V~,5
0/
60Hz
S
/N.
8900 193
8
1
00
1
A035413
Mad
e
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N663
Rated input
P
owe
r
: 1600V A
Inpu
t
1
Pr
i
ori
ty
S lav
e I
nput
100 V
Inpu t2
E nab
l
e
100 V 0
100 V
70V0 0 8
D
ire
ctO
u
t
pu
t
Inp ut
Inp
ut
I
np
u
t
2-P rogra
mI
npu
t
1-
P rior
ity
2
..2 4V
Defa ult
O
f
f
GND 2 .
.
24V
Defa ult
O
n
GND
Priority Only No Priority
100V 0 100V 0
Priority Controlled Output
24V DCIn
100V 7 0 V0 0 8
Direct O utput
Priority Only
No Priority
70 V100 V
8 Ohm
8 Ohm
8 Ohm
8 Ohm
8 Ohm
8 Ohm
4 Ohm
4 Ohm
Figure6.4: Priority input and control terminals